are off to central america where archaeologists have discovered a 1500-year-old mayan freeze. they excavated the sculpture in the jungles of northern guatemala. >> the well preserved picture. researchers said the findings would provide important clues on the mayan civilization. they say further discoveries are likely. indiana jones would be on his way. all right, you are up to date. we will see you again at the top of the hour. explore new worlds and new ideas through programs like this, made available for everyone through h contributions to your pbs station from viewers like you. dr. joel fuhrman is a board-certified physician whose groundbreaking work has been acclaimed as a medical breakthrough for weight loss, disease reversal and prevention. the american diet today has 62% of calories from processed foods. how many of you would like a promise that you don't have to have a heart attack when you get older?